Former ‘N Syncer JC Chasez knows a thing or two about dance moves (he rocked the “Bye Bye Bye” routine back in the boy-band day), and now he’ll be joining Randy Jackson at the judging table for MTV’s newest reality competition show, Randy Jackson Presents: America’s Best Dance Crew. In a message sent to MySpace friends on Friday, Chasez announced his participation in the show, which starts airing Feb. 7. A few weeks ago, the Hollywood Insider spoke to Jackson about why he chose to take part in this search. “I just love the whole concept,” he told us. “I love the battle, it’s like back to the B-Boys and Krush Groove days, when Michael Jackson had ‘Beat It.’ Or the cast of High School Musical against Hair. I think it’s really cool. And these kids, they pump each other up. I’m like, ‘Yo, this is hot!'” Yo.